Question

Write the equation of a line with an undefined slope and point (1, 7).

y=7
x=7
y=1
x=1

Answer 1

x=1

Explanation:

If the slope is undefined then it is a vertical line through an x-value on the x-axis. These lines have the for x=a. Since the point (1,7) is on the line then the equation is x=1.